<template>
    <view v-if="showPopup" class="uni-popup" :class="customClass" :style="{'top': top}">
        <view :class="[ani, animation ? 'ani' : '', !custom ? 'uni-custom' : '']" class="uni-popup__mask" @click="close(true)" ></view>
        <view :class="[type, ani, animation ? 'ani' : '', !custom ? 'uni-custom' : '']" class="uni-popup__wrapper goodslist-uni-popup safe-area" @click="close(true)" v-if="isIphoneX">
            <view class="uni-popup__wrapper-box goodslist-uni-popup-box" @click.stop="clear">
                <slot />
            </view>
        </view>
        <view :class="[type, ani, animation ? 'ani' : '', !custom ? 'uni-custom' : '']" class="uni-popup__wrapper goodslist-uni-popup" @click="close(true)" v-else>
            <view class="uni-popup__wrapper-box goodslist-uni-popup-box" @click.stop="clear">
                <slot />
            </view>
        </view>
    </view>
</template>

<script>
    export default {
        name: 'UniPopup',
        props: {
            // 开启动画
            animation: {
                type: Boolean,
                default: true
            },
            // 弹出层类型，可选值，top: 顶部弹出层；bottom：底部弹出层；center：全屏弹出层
            type: {
                type: String,
                default: 'center'
            },
            // 是否开启自定义
            custom: {
                type: Boolean,
                default: false
            },
            maskClick: {
                type: Boolean,
                default: true
            },
            show: {
                type: Boolean,
                default: true
            },
            top: {
                type: String,
                default: '0'
            },
            customClass: {
                type: String,
                default: ''
            }
        },
        data() {
            return {
                ani: '',
                showPopup: false,
                callback: null,
                isIphoneX: false
            };
        },
        watch: {
            show(newValue) {
                if (newValue) {
                    this.open();
                } else {
                    this.close();
                }
            }
        },
        created() {
            this.isIphoneX = this.$util.uniappIsIPhoneX();
        },
        methods: {
            clear() {},
            open(callback) {
                if (callback) this.callback = callback;

                this.$emit('change', {
                    show: true
                });
                this.showPopup = true;
                this.$nextTick(() => {
                    setTimeout(() => {
                        this.ani = 'uni-' + this.type;
                    }, 30);
                });
            },
            close(type, callback) {
                if (!this.maskClick && type) return;
                this.$emit('change', {
                    show: false
                });
                this.ani = '';
                this.$nextTick(() => {
                    setTimeout(() => {
                        this.showPopup = false;
                    }, 300);
                });

                if (callback) callback();

                if (this.callback) this.callback.call(this);
            }
        }
    };
</script>
<style>
    .uni-popup {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 999;
        overflow: hidden;
    }

    .uni-popup__mask {
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 998;
        background: rgba(0, 0, 0, 0.4);
        opacity: 0;
    }

    .uni-popup__mask.ani {
        transition: all 0.3s;
    }

    .uni-popup__mask.uni-bottom,
    .uni-popup__mask.uni-center,
    .uni-popup__mask.uni-right,
    .uni-popup__mask.uni-left,
    .uni-popup__mask.uni-top {
        opacity: 1;
    }

    .uni-popup__wrapper {
        position: absolute;
        z-index: 999;
        box-sizing: border-box;
        //background: #ffffff;
    }

    .uni-popup__wrapper.ani {
        transition: all 0.3s;
    }

    .uni-popup__wrapper.top {
        top: 0;
        left: 0;
        width: 100%;
        transform: translateY(-100%);
    }

    .uni-popup__wrapper.bottom {
        bottom: 0;
        left: 0;
        width: 100%;
        transform: translateY(100%);
        background: #ffffff;
    }

    .uni-popup__wrapper.right {
        bottom: 0;
        left: 0;
        width: 100%;
        transform: translateX(100%);
    }

    .uni-popup__wrapper.left {
        bottom: 0;
        left: 0;
        width: 100%;
        transform: translateX(-100%);
    }

    .uni-popup__wrapper.center {
        width: 100%;
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
        transform: scale(1.2);
        opacity: 0;
    }

    .uni-popup__wrapper-box {
        position: relative;
        box-sizing: border-box;
        border-radius: 10rpx;
    }

    .uni-popup__wrapper.uni-custom .uni-popup__wrapper-box {
        background: #fff;
    }

    .uni-popup__wrapper.uni-custom.center .uni-popup__wrapper-box {
        position: relative;
        max-width: 80%;
        max-height: 80%;
        overflow-y: scroll;
    }

    .uni-popup__wrapper.uni-custom.bottom .uni-popup__wrapper-box,
    .uni-popup__wrapper.uni-custom.top .uni-popup__wrapper-box {
        width: 100%;
        max-height: 500px;
        overflow-y: scroll;
    }

    .uni-popup__wrapper.uni-bottom,
    .uni-popup__wrapper.uni-top {
        transform: translateY(0);
    }

    .uni-popup__wrapper.uni-left,
    .uni-popup__wrapper.uni-right {
        transform: translateX(0);
    }

    .uni-popup__wrapper.uni-center {
        transform: scale(1);
        opacity: 1;
    }

    /* isIphoneX系列手机底部安全距离 */
    .bottom.safe-area {
        padding-bottom: constant(safe-area-inset-bottom);
        padding-bottom: env(safe-area-inset-bottom);
    }

    .left.safe-area {
        padding-bottom: 68rpx;
    }

    .right.safe-area {
        padding-bottom: 68rpx;
    }
</style>